Molding-machine.



PATENTED DEC. 5, 1905.

W. J. PATGHBLL. MOLDING MACHINE. APBLIOATION FILED mm: 6. 1904.

6 SHEETS-SHEET 1.

PATENTEID DEG. 5, 190's. J. PATCHELL. MOLDING MACHINE.

APPLICATION FILED mm: s, 1904.

6 sums-sun? 2 No. 806,179. PATENTED DEC. 5, 1905.

4 'w. J. PAIGHBLL.

MOLDING MACHINE.

APBLIOA-TION FILED JUNE 6, 1904. v

6 BEETS-SHEET 3.

s r't z 7C2 PATENTED DEG. 5,1905.

W. J. PATGHELL. MOLDING MACHINE. APBL-IOATION IILED JUNE 6, 1904.

B SHEETSSHEBT 4.

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r filler/ll! n w 000 000 000 000 000 000% 00% 00 @000 000 000 000 Q00000 000 00 000 000 doow 000 00 llllllll 44 1/11 II II] I /Il/IJ No.806,179. 'PATENTED DEC. 5, 1905. W. .J. PATGHELL.

MOLDING MACHINE. APPLAIGATION FILED JUNE 6, 1904.

' e SHEETS-SHEET 5.

' wi lmemw ing-Machines; and I do declare the following UNITED STATESPATENT oFF oE. I

a 1 WILLIAM J. PATGHELL, or sir. LOUIS, MISSOURI- I MOLDING-MACHINE.

Specification of Letters Patent.

Patented Dec. 5, 1905.

Application filed June 6, 1904. Serial No. 211,392.

To all whom it may concern:

Be it known that I, WILLIAM J. PATOHELL, a citizen of the United States,residing at St. Louis, in the State of Missouri, have invented certainnew and useful Improvements in Mold to bea full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it 'appertains to make and use the same, reference beinghad to the accompanying drawings,and to the letters of reference marked.thereon, which form a part of this specification.

My invention relates to a'sand-molding machine or, mechanism for firmlypacking the sand placed in a molders flask over a pattern insertedtherein and around the edges of the flask preparatory to forming a mold'in which to make a casting.

One of the objects of my invention is .to produce a machine containing avertically-reciprocating ramming-head carrying a series ofvertically-placed tubes or cylindrical openings in each of which a smallram provided with a piston-head is adapted to be forced outwardly bymeans of fluid-pressure. Each ram has an enlarged outer end, theworking, face of which is preferably square and of such dimensions thatwhen in operative position the series of rams will present asubstantially unbrokenramming-surface.

Another ob ect of my inventlon is to arrange the cylinders in the.ramming-head 1n 1 rows crosswise thereof and connect the, cylin- Afurther object of my inventionrelates to means for raising and loweringthe rectangular frame which carries all the working parts, including theramming-head, so that the rams may be brought to suitable workingposition with relationto' the flask irrespective of the fact that a highor low flask is to be used, also to means for throwing certain rams outof action when a narrow flask is placed beneath the machine, and tomeans for automatically movingthe truck on which the flask is carried. I

Other features of the invention not enution on "the line 5 5 of Fig. 1.

by the arrow in Fig. 11.

eted or bolted together.

merated herein will be referred to in the descriptionfollowing, andspecifically pointed out in the claims.

In the annexed drawings, Figure 1 is a view in side elevation of myinvention. Fig. 2 is an end view; Fig. 3, a vertical cross-sectional Iview 'on the line 3 3 of Fig. 1. Fig. 4 is a plan view; Fig. 5, a viewin horizontal 'sec- Fig. 6 is aside view of the ramming-head detachedand partly broken away. Fig. 7 is an end view of the same. Fig. 8 is abottom viewof the cappiece, partly in section. Figs. 9'and 10 are viewsof details. Fig. 11 represents an elevationfbroken away in the middle)of a mechanismfor reversing or turning over'the flask after being tampedfor removing the pattern. Fig. 12 is an elevation of the same mechanismviewed in the direction indicated Fig. 13 is an enlarged. sectionaldetail view ofthe bearing on the flask-supporting frame and one of thehangers; and Fig. 14 is a section viewon the line 14: 14, Fig.'13.

Referringto Figs. 1, 2, and 3, two verticallyplaced uprights or supportsA and B are shown, one at each end of the machine. Each support consistsin part of a front leg or column a and a similar rear one, 6, the twocolumns being united by a cap a and. a base 6. Each upright or. supportis preferably cast in one' piece; but if found more convenient ordesirable it may be built up-of several'pi'eces riv- To the legs orcolumns a [7 of the support A are bolted crosspieces a and Z2 itscolumns connected a single cross-piece (0 Between the end supports ABand extending from one to the other isa hollow rectangular box-likestructure or frame C, grooved externally at each corner and adapted toengage with and slide upon rails or plates a projecting inwardly fromthe columns a a and Z) Z). Within the box or frame 0 is placed aramming-head D, fins d on the ends thereof engaging grooved guidesor'ways 0 within the frame C at its ends. (See Fig. 5.) At the top oftheframe 0 and at one side thereof project bearings O G, in which isjournaled' shaft G. supported in bearings; fixed to The opposite supportB has IIO the box or frame C. The shaft Gr extends lengthwise of themachine and carries a second gear-wheel G similar to G. Crank-pins g gare attached to the respective gear-wheels G G on which pins arejournaled connectinglinks H H, their lower ends being pivoted to ears (1d on the upper side of the ramminghead D. It will be readily understoodfrom the above that the operation of the motor will by the meansdescribed cause a more or less rapid reciprocation in a verticaldirection of the ramming-head.

The ramming-head D consists, primarily, of a rectangular body D, havinga length preferably greater than its width, through which are formed aseries of vertically-disposed cylindrical openings 0Z These cylindricalopenings or cylinders 0Z may be made by boring through a solid block ofmetal or through a series of narrow blocks assembled in the body D orpreferably by a number of cylindrical tubes placed within the box-likebody and fixed therein. As shown in Fig. 5, the cylinders d are arrangedin symmetrical rows lengthwise and crosswise of the body D. In theinstance illustrated in the drawings the longitudinal rows containtwenty-nine cylinders, while in the cross-rows there are but three.

Secured to the top of the body D by bolts or other fastening devices isa cap D in which are formed chambers (i separated from each other bycross partitions d*. A plate 03 forms the bottom of the cap D throughwhich plate holes d are made, so that when the cap D is secured in placeon the body D the holes will register with the cylinders 1 From this itwill be observed that the cylinders 61 of each cross-row open into thesame chamber 61 Extending upwardly from each end of the cap D are theears d, to which the connecting-links H H are journaled and by means ofwhich the ramming-head is operated.

Within each cylinder (1 a ram 1 is adapted toreciprocate, each ram beingpreferably square in cross-section with an enlarged rectangular lowerend 7; and a circular head or piston c", fitted air-tight within itscylinder. The rams I are forced downwardly and held normally in thisposition by means of compressed air.

Extending longitudinally of the ramminghead D and upon opposite sides ofthe cap D (see Fig. 3) are two compressed-air cylinders or pipes J J,one pipe carrying air at about eighty pounds pressure, while the otherone, J, is charged with air at a pressure of about twenty pounds. Thesepipes J J receive compressed air through flexible tubes and 1' from anywell-known form of air compressor or compressors. Each chamber (Z in thecap D is connected with both compressed-air pipes J J by means of smallpipes jj, respectively, each small pipe being supplied with a valve foradmitting compressed air into the chamber (Z and from thence to thethree cylinders (Z in communication therewith. A petcock orexhaust-valvej opens out from each chamber, by means of which thecompressed air therein maybe exhausted at any time. A fixed plate K,placed beneath the body D, is perforated with square holes is, throughwhich the rams pass and are guided thereby.

L represents a molders flask in which a pattern of the article to becast is placed and covered with sand to be tamped by the rams I. Theflask L rests on a truck M, adapted to be moved crosswise of the machinebeneath the rams I by means of suitable gearing now to be described.

The crank-pin g, which projects beyond the connecting-link H, carries anarm N, projecting inwardly toward the shaft (Jr, the said arm beingprovided with a short shaft 01, the axis of which and of the shaft G arecoincident. To the shaft n, which turns in a bearing 12,, is fixed amutilated bevel gear-wheel n, meshing with and at the proper timerevolving a bevel-pinion 0, secured to a vertical shaft 0, on the lowerend of which is placed a small gear-wheel 0.

A vertical shaftPextends the length of the upright or supportA andcarries a gear-wheel p, which engages with and is turned by the gear 0.The gear 1) is adapted to slide vertically on the shaft P and also torotate it. The lower end of the shaft P, which turns in a bearing a, isprovided with a bevel-gearp in engagement with a similar gear R on ashort shaft 1, carried in a bearing a? on the upright support A. Theinner end of said shaft o has fixed thereon a pinion R in engagementwith a rack M, fixed to the truck M, supported on rails, as shown. Thuswith each revolution of the mutilated bevel gearwheel n the pinion 0 isgiven one rotation, which through the gearing described turns the pinionR and moves the truck forward a certain fixed distance.

Assuming that a flask L containing the pattern and sand rests on thetruck M and that compressed air at, say, eighty-pounds pres-, sure hasbeen admitted to all the chambers d, the rams I will each be forcedoutwardly by a pressure of eighty pounds. The mechanism being nowstarted, the ramming-head will be carried downward and the rams causedto press on and pack the sand within the flask, the compressed air alsoserving as a cushion in the upward movement or yielding of the rams whenpressed against the sand, thus allowing the rams to have a variablestroke, whereby they will accommodate themselves to irregularities ofthe pattern in the flask. As the ramming-head is raised by theconnectinglinks H H the mutilated bevel gear-wheel will engage with thebevel pinion u and through the gearing heretofore described rotate thepinion R and cause aforward movement of the truck M for the purpose ofbringing a fresh portion of the sand in the flask beneath the rams I,the movement of the truck being completed before the rams maketheir nextstroke. As it has been found desirable to pack the sand harder along thesidesof the flask, or at the parting, than inthe center over the patternchambers at the ends of the cap' D are filled with the higher air-pressure,

' while others are opened to the lower pressure.

When a flask narrower than the largest size permissible on the machineis 'to be packed,

the rains I which will not be needed are pushed up into their cylinders,the petcocks being first opened to allow the air to escape and thenclosed. The rams thus elevated will be retained in their position byatmospheric pressure,-'as the lower ends of the cylinders are open. i

To enlarge it may operate on flasks of different heights, therectangular box-like frame C is supplied with means for raising andlowering it on the endsupports A and B. As the ramming-head D and themechanism by which it is operated and other coacting parts are connectedto or supported by the rectangular frame C, this frame may be movedwithout dist'urbingthe relation of any of said parts. By'adjusting theframe and the ramming-head together the rams are brought to the properposition for flasks of various depths without changingvthe length ofstroke of the ramming-head and itsrams. a 1 I Journaled in bearings on"the front'of the rectangular-frame C is a shaft S,on which are looselysleeved two pinions s and s, adapted to be actuated, respectively, fromgearwheels G G when brought into operative connection therewith byclutch mechanism such as that hereinafter described; On each end of theshaft'S is fixed a pinion .9 each of said pinions engaging with similarpinions s on short shafts 8 supported in bearings s and carrying each abevelpinion's At each end of the rectangular frame C is a project ingportion a, which extends between the columns of the supports A B.Secured to these projecting portions are upstanding bearings'C in eachof which a threaded sleeve or nut T is adapted to rotate. The upperendofeach sleeve is provided with a bevel-pinion T in rotative engagementwith the bevel-pin ions. .9 Passing vertically through 'eachof thethreaded sleeves T is a screw-threaded rod T fixed to the cap-piece aand cross-' piece a of itsrespective support.

A clutch mechanism comprising the clutches U, feathered to the shaft Sand connected by a rod U and operated by a handle or lever u,whenshifted in one direction will clutch the sleeve of pinion s to theshaft S and cause the shaft to be turned in one direction by thegear-wheel G and when-shifted in the opposite direction will unclutchpinion sand clutch pinion s, which being in mesh with pinion s and thatpinionin mesh with gear'G will the scope'of themachine sothatcause shaftS to revolve in the opposite direction. The rotation of shaft S willtransmit its motion'to the threaded sleeves T, which by their rotationon the screw-rods T will cause the frame O tobe raised or loweredaccording to the direction in which the shaft S is turned. I

For the purpose of sifting sand'onto the flask I provide a screen orriddle R which is supported by grooved wheels r resting upon a trackformed by brackets R extending outfrom the main frame of the machine.riddle is connected by rods r with eccentrics r, mounted on a shaft R,journaled in suit-' able bearings on the frame and provided with pinions0", which mesh with and derive inotion from the gear-Wheels G" G so thatin the rotation of the shaft and its eccentrics the riddle will bereciprocated back and forth and the sand sifted by its screen. Thesandpassing through the screen will pass down onto the flask, to whichit may be conducted by a 7 suitable hopper (not illustrated) orotherwise.

This

passage of the wires or needles, and the latter are held therein by theset-screws '0 after being adjusted to conform to the irregularities inthe pattern. Now as the cross-bar Vv is raised and lowered with thevertical movements of the ramm'er-head or plunger-frame. the wires orneedles are raised and lowered" and the finished mold perforated, so asto permit the escape of gas For the purpose'of 'strikingoff thesurplussand from the flask I provide a scraper S which at one end is hinged toavertical rod" 89, supported by brackets 8 attached to the uprightstandard B, and at the-other end is jointedto the rodsS and S, whichpass through'sleeves s and .8, supported by brackets s and 8 attached tothe opposite .4

their sleeves the scraper may be adjusted to the angle desired andheldthereto by the locking .or set screws 8 and The rod S is upright A. Bysliding the rods S and S in jointedito arod S which at that point willbe connected by a vertical rod to the rod S to which the upper edge ofthe scraper is attached, the opposite-end of such rod,= as well as theend of rod S being connected to the vertical rod-s as illustrated. vTherod S serves to brace thesoraper, By providing for the vertical adustment of the scraper or strike its height may be varied to correspondwith the height of flask used and by providing for its angularadjustment can be brought to the position for most effectively strikingoff the surplus sand according as the degree to which the sand has beentamped may require. If the sand is rammed very hard, as is customary insteel-founding, the angle of the scraper can be made greater than isneeded for the ramming of cast-iron, as the greater the angle the lesspower required to strike oflf the sand. Another advantage of thisadjustment is that the sand thrown off by the strike may be deliveredinto a hopper at the side of the flask and from thence carried by aconveyer to the storage-tank for use again. Sometimes as a matter ofpractical convenience the position of the hopper may be changed, andthis angular adjustment of the strike permits the proper delivery of thesand to the hopper.

After the sand has been rammed the drag is turned over preparatory toapplying the cope, and with that in view I have devised the followingmechanism for rolling over the drag, the mechanism being placed at theend of the machine from which the carriage carrying the rammed moldemerges: Two parallel beams W, each supported 'upon a column W support ahorizontal shaft W, journaled in bearings w. This shaft supports aswinging frame composed of hollow vertical side members W connectedtogether by cross-bars W braced by plates w the ends of the shaftpassing through the hollow side members W so that the frame will swing.Within these hollow side members fit rackfaced bars W which at theirlower ends are formed with open-faced boxes 21;, and in engagement withthe rack-faces are pinions @127, which are secured to the ends of theshaft W, so that said bars may be raised and lowered by rotation of theshaft. The shaft W carries a loosely-mounted worm-wheel which may belocked to the shaft by a clutch w feathered to the shaft, so as torotate the shaft. The worm-wheel derives its motion from a worm W,forming a part of a shaft W supported in bracket-arms w and driven byany suitable motor. (Not shown.) One end of the shaft W carriesabevel-pinion w which gears with a bevel-pinion w, supported by abracket 10 carried by the side member W and through the pinion w passesa vertical shaft W which has feathered to it a clutch 20 by which thepinion w may be clutched to the shaft W and then cause said shaft torotate. The lower end of shaft WV passes through a bracket to, carriedby the lower end of the rack-bar V and is provided with a bevel-pinion10 which meshes with a pinion w journaled to turn in the box end of therack W. This pinion is held in place by a collar w and is hollow orformed with a central opening, angular in cross-section, to

receive a correspondingly-shaped locking-pin W for a purpose hereinaftermentioned.

Upon the carriage or truck M is set the open frame Y, which consists ofchanneled iron sides 1 supporting the I-beams 7 whose upper edgesproject above the top of the frame. The frame Y is provided with endgudgeons or journals 1 and on top of the I- beams 1/ is placed the flaskL, the cheeks of which have flangesy, as illustrated. The flask isclamped to the I-beams by clamps Y, which are grooved on their underfaces, so as to slide on the flanges of the beams, and are formed eachwith a lip 7/ to fit over theflange of the flask and also with a stud orshoulder to be struck by a tool in driving the clamp to and out ofclamping position. The gudgeons of the frame Y fit in the open-faceboxes w of the racks W and the frame is locked to the pinion w by thelocking-pin WV, which enters an angular opening formed in the gudgeon 7at that end of the frame. With the parts arranged as shown in Figs. 10and 11 of the drawings if the worm-wheel be clutched to the shaft \V andthe vertical shaft W be clutched to the pinion w the racks W will beelevated and the frame Y lifted, and the shaft W will be rotated so asto turn over the frame and the flask carried by it. The turning of theframe may be stopped by throwing out the clutch w, and by reversing therotation of the worm the racks and frame Y may be lowered. \Vhen thecarriage or truck is again to be moved into place to supply sand to themold and to ram the sand, the swinging frame carrying the racks VV' isswung away from the truck, so that the latter may be moved withoutinterference from the turning-over mechanism. The truck may carry theframe Y, with the flask clamped thereto, into position for receiving thesand from the riddle and for ramming the sand, or the flask may be setdirectly on the truck or carriage without the employment of the frame Y.

Vhile I have shown and described the chambers d as communicating withbut three cylinders, it is to be understood that a greater or lessernumber of cylinders may open into a chamber; also, that the position orarrangement of the chambers may be varied from that shown in order thatcertain parts of a flask may be packed more or less firmly than at otherparts; also, that other means than the screws may be employed forvertically adjusting the frame carrying the ramming-heml. It will alsobe understood that if the truck supporting the flask be stationary andthe framework carrying the operating mechanism be made to move back andforth over the flask instead of the flask being moved back and forthunder said mechanism the invention described will be the same.

I have illustrated and described the preferred construction andarrangement of the several partsybut changes can be made and essential'features of my invention be retained;

I have mentioned compressed,- air asfthe: pressure fluid; but'it will beunderstoodthat any other elastic. fluid or agent serving. theheadcarrying a bank of cylinders and vertitically adjustable to variousheights above a same purpose will be included within that designation. 1i

Having described. my invention'and set forth its merits, What I claimis- 1. In a sand-molding machine, an adjustable frame, a ramming-headcarryingrams and reciprocable in said frame, power-driven means foradjusting said frame and ramming- -head, and means for'throwing saidpower driven means into and out of operation, substantially asdescribed.

2. In a sand-molding machine, the combiv nation of an adjustable frame,a ramminghead reciprocable in said frame and divided into chambers,cylinders depending from said head and in communication with said cham'bers, piston-headed rams in the cylinders, means for admitting apressurefluid to the chambers, power-driven means for adjusting saidframe and ramming-head, and means for ,throwing said power-driven meansinto and out of operation, substantially as described.

3. In a sand-molding machine, an adjustable frame in combination with aramming head adapted to reciprocate vertically within saidframe, saidramming-head being provided with a series of cylinders arranged in rowsand having a chamber in communication with each row of cylinders, apiston-headed ram in each cylinder, and means for admitting a pressurefluid to the chambers.

4. In a sand-molding machine, an adjust able frame, a reciprocableramming-head carried by said frame, mechanism on said frame forreciprocating said head, power -driven means for adjusting said frameand-ramminghead, and means for throwing said power- .driven means intoand out of operation, substantially as described. v

5. In a sand-molding machine the combination of fixed uprights orsupports, a frame adjustably connected thereto, operating mechanism onsaid frame, a screwon each upright, a rotatable nut on each end of saidframein engagement with" said scr'ews, gearing between the operatingmechanism and the rotable nuts, and means for engaging and disengagingsaid gearing.

6. In a sand-molding machine, a ramming head containingaseries ofcylinders and chambers, each chamber being in communication with acylinder, combinedwith a ram in each 7 cylinder, and means forconnecting each chamber with sources of pressure fluid ofdifferentpressures.

7. In a sand-molding machine, a ramming- .head containing a series ofcylinders and chambers, each chamber being in communication with acylinder, combined with a ram in each cylinder, means, for independentlyconmeeting each chamber vwith a source of pressure fluid and a valve forexhausting the pres- .sure fluid from any desired chamber.

= 8. In a sand-molding machine,a rammingflask-supporting truck, a ram ineach cylinder and extending below the same, an elastic cushion to resistthe inward movement of the rams, said cushion consisting of an elasticfluid of a predetermined pressure to suit the conditions ofthe work andresistance to be offered, means for reciprocatingthe head and bank ofcylinders, a flask-carrying truck adapted tomove transversely beneaththe rams, and means connected with and actuated from the rammingmechanism under the various vertical adjustments of theverticallyadjustable ramming-head for moving the truck as the rams aremoved in one direction.

9. In a ramming-head for sand -molding machines, the combination withthe head, of a series of cylinders, the head containing a series ofchambers, each chamber being arranged to communicate with one of thecylinders, a

ramin each cylinder, a main fluid-pressure pipe on'each side of thecap-piece, a valved connecting tube between each main pipe and eachchamber, and an escapevalve. 10. Ina ramming-head for sand-moldingmachines, the combination with the head, of

a series of cylinders, the head containing a series ofchambers incommunication With the cylinders, a ram in each cylinder, a source ofpressurefluid, means for cutting off the supply ofthe fluid fromthechambers, independently of each other and means for reciprocating theramming-head. a

11. In a sand-molding machine, the combination of fixed uprights orsupports, a frame carried by said uprights and adjustablethereon, aramming-head carrying rammers and adapted to move vertically'in saidframe, mechanism for reciprocating the ramming head, a truck beneath therammers, a rack thereon, and gearing, including a pinion, in engagementwith said rack, and operated by said'ramming-head-reciprocatingmechanism, for moving the truck. v I

12. In a sand-molding machine, the-combination of avertically-adjustable frame, a ram ming-head carrying rammers andvertically movable in said frame, a riddle'supported from saidvertically-adjustable frame, and

mechanism for moving the ramming-head-and reciprocating the riddle.; V II Y, r

13.-' In a sand-molding machine, the combinationof an adjustableramming-head carry:

ing rammers for packing the sand in a flask, venting-wires or needlesadjustable with the ramming-head and having adjustment independent ofthehead to conform to irregularities in thepattern, and mechanism forreciprocating the needles as the rammers are raised .and lowered.

14. In a sand-molding machine, the combination of a rammer-head carryingrammers for packing the sand in a flask, wires or needles supported fromand carried by the rammer-head for perforating the packed sand and afixed bar supported from the machineframe at a point below the rammersand provided with apertures to receive and guide the wires or needles,substantially as described.

15. In a sand-molding machine, the combination of a ramming-headcarrying rammers for packing sand in a flask, and a scraper for removingsurplus sand from the flask hinged at one end and obliquely adjustablefrom the opposite end.

16. In a sand-molding machine, the combination of a ramming-headcarrying rammers for packing sand in a flask, and a vertically andobliquely adjustable scraper for removing surplus sand from the flask.

17. In a sand-molding machine, the combination of a flask-carrying frameprovided with gudgeons, vertically-movable bars provided with boxes toreceive the gudgeons of the frame and suspended from a support above theflask-carrying frame, means for raising the bars to lift the frame, andpower-driven means for turning over the flask-carrying frame.

18. In a sand-molding machine, the combination of a flask-carrying frameprovided with gudgeons, vertically-movable rack-bars pro- .vided withboxes to receive said gudgeons, a

shaft carrying pinions engaging the rackbars, driving means, a clutchfor clutching and unclutching said means to and from said shaft foractuating the rack-bars, and powerdriven means for turning over theflaskcarrying frame.

19. In a sand-molding machine, the combination of aflask-carrying frameprovided with gudgeons, vertically-movable rack-bars provided with boxesto receive said gudgeons, a

shaft carrying pinions engaging the rackbars, driving means adapted tobe clutched to and unclutched from said shaft for actuating therack-bars, a bevel-gear connected to said shaft, a vertically-movableshaft provided at one end with a bevel-gear meshing with a bevel-gearconnected to one of the gudgeons of the flask-carrying frame, and abevel-gear adapted to be clutched to the shaft and meshing with thebevel-gear connected to the bevel said gudgeons, a gear, a pin forlocking together said gear and one of the gudgeons, and a shaft carryinga gear meshing with the gudgeon-gear for turning over the flask-carryingframe.

21. In a sand-molding machine, the combination of a flask-carrying frameprovided with gudgeons, a swinging frame provided with vertically-movingracks formed at their lower ends with boxes for the gudgeons of theflaskcarrying frame, means for raising the racks to lift theflask-carrying frame, and means for turning over the flask-carryingframe.

22. In a sand-molding machine, the combination of a swinging frameprovided with vertically-moving racks formed with boxes at their lowerends, a flask-carrying frame provided with gudgeons journaled in saidboxes, a driven shaft provided with pinions meshing with thevertically-movable racks, a pinion connected with .one of the gudgconsof the flask-carrying frame, a rotatable shaft provided with a pinionengaging the pinion of the flask-carrying frame, pinions connecting saidshaft and the driven shaft, and mechanism for throwing said shafts intoand out of action.

23. In a sand-molding machine, the combination of a swinging frameprovided with vertically-movable racks and formed with boxes at theirlower ends, a flask-carrying frame provided with gudgeons journaled insaid boxes, ashaft provided with pinions meshing with the racks, aworm-wheel mounted loosely on said shaft, a worm engaging saidworm-wheel, a clutch for locking the wormwheel to said shaft, a pinionconnected to one of the gudgeons of the flask-carrying frame, a shaftcarrying a pinion engaging the pinion of the flask-carrying-framegudgeon, a pinion loosely mounted on said shaft, a clutch for lockingsaid pinion to the shaft, and a pinion actuated from the shaft carryingthe wormwheel and engaging the clutch-pinion on the other shaft.

24. In a sand-molding machine, the combination of a flask-carrying frameprovided with flanged supports for a flask, a flanged flask resting onsaid supports, and sliding clamps engaging the flanged supports andformed with lips to engage the flange of the flask, to clasp the flaskto the supports.

In testimony whereofl aflix my signature in presence of two witnesses.

WILLIAM J. PATCHELL.

I/Vitnesses:

HENRY THALE, EDWARD C. Louw.

